[PATCH v2 0/6] restore APP run on unplugged output

[Xiong Zhang]

if the unplugged output is the first output in output list,
the surface on unplugged output is marked dirty, and the 
surface on following output is moved ahead orderly.

if the unplugged output is the last output in output list,
the surface on unplugged output is moved to the first output

if the unplugged output is in the middle of output list,
the suruface on unplugged output is moved to the first output,
and the surface on following output is moved ahead.

>From the first version, the modification contains:
-don't add plane->surface_list
-rename output_destroy_listener to shell_output
-deal with child window, like subsurface, popup window
-move weston_output_move() calling function from
 update_outputs() to handle_output_destroy()

I test this patchset on two and three outputs, it works fine.
But I maybe miss some window to restore.

Xiong Zhang (6):
  compositor: set surface->plane from destroyed plane to NULL
  shell: register output->destroy_signal handler
  shell: restroe app run on non default and unplugged output
  shell: restroe app run on default and unplugged output
  window,desktop-shell: deal with output unplug on client side
  shell: restore app when workspace_num > 1 on unplugged output

 clients/desktop-shell.c |  20 ++++
 clients/window.c        |  32 +++++++
 clients/window.h        |   3 +
 src/compositor-drm.c    |  14 +--
 src/compositor.c        |  41 +++++++-
 src/compositor.h        |  11 ++-
 src/shell.c             | 247 ++++++++++++++++++++++++++++++++++++++++++++++++
 7 files changed, 351 insertions(+), 17 deletions(-)

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1.8.3.2